To all whom it mat concern



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IMPROVEMET IM MOUNTING GIAZIEIIS DIAMONDS.

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Be it known that I, PHILIP SINSZ, of the city and county of Baltimore, and State of Maryland, have invented a new and useful Improvement in Glaziers Diamonds; and I do hereby declare the following to be a full, clear, and exact description of the nature, construction, and opera-tion of the same, reference being had to? the accompanying drawings, whichare made a part of-this specification, and in which-- Figure l is a perspective view of my improved instrument as' it appears when open and readyfor use.

Figure 2 is a perspective view showing the same in its closed condition ready to be put into thepocket.

Figure 3, is a longitudinal section of a portion ofthe same. y I

Similar letters of reference indicate corresponding parts inthe several figures.

i This invention relates to the instrument which is commonly called the glaziers diamond, but which is provided, in addition to the diamond, 'with a notched plate or bar, for breaking oli` the glass after it is cut by the diamond. The invention consists in pivoting the breaker to the ordinary handle by which the instrument is held, and swivelling the diamond-block to the breaker, so that the breaker and diamond-block may be closed upon one end of the handle simultaneously to enable. the instrument to be conveniently carried in the pocket. The breaker and diamond-block have been heretofore pivoted to and adapted to close upon'the opposite ends of the handle7 but' such construction necessitates a change in the shape of the handle, which prevents the latter from being conveniently'held between the fingers when in use.

In'order that others skilled in the art to which-my invention appertains may be enabled to fully understand and use the same, I will proceed to describe it in detail.

In the accompanying drawings, A represents the handlel of the instrument, which is of the usual round and slightly tapering form, so as to be conveniently held between the first and second nger when in use, B is the breaker, which consists of a bar or plate having a series of notches of diiferent size adapted to embrace glass of different thickness. This breaker is attached to the handle by a'pivot or `joint at b. C is the block in which the diamondc is set'. The block C is attached to the breaker B by aswivel joint at b', so that when the diamond is drawn over the glass in the act of cutting, the block B will adjust itself against the edge of the ruler which is employed to guide the diamond. D is a spring which is secured to the handle A by a screw, d, and which by bearing against the back or front of the breaker B, near the endof thelatter, serves to give rigidity to the breaker and diamond-block either in their open or closed position.VA Thus it will be seen that the breaker and diamond-block can be simultaneously closed upon one end of the handle,'so as to enable' the instrument to be conveniently carried irf the pocket, which is quite a desideratunl with the glazier, as the use of the instrument is generally limited to a few moments at a time. In my instrument the form of the handle A, at the part where it is grasped between the fingers, is such as to enable it to be conveniently held when in use, it being in this respect similar to the most common form of glaziers diamonds. But when the breaker and diamond-block are pivoted to the opposite ends of the handle so as to close thereupon,'there must needs be a change in the size or form of the handle in consequence of such construction, andthe handle cannot under such circumstances be conveniently held between the fingers. v

p Having thus described my invention, the following is what 1 'claim as new, and desire to secure by Letters Patent: v I

I claim the within-described glaziers diamond, the same having the breaker B jointed or pivoted to the handle A, and the diamond-block swivel-led to the breaker,` substantially as and for the purpose set forth.

To the above specication of my improved glaziers diamond, I have signed my hand this 13th of November, 1866. i

PH. SINSZ.

Witnesses:

SoLoN C. Knnolv, CHAs. D. SMITH. 

